Speino hinge



(ModeL) J; H. SHAW SPRING HINGE.

Patented Dec. 9, 1884.

' lUNiTnrr STaTies PATENT @rr cn.

JOHN H. SHAV, OF NEW HAY ni GONXECTICUT, ASSTGXOR TO SARGFNT 85 (10., OF SAME PLACE;

HINGE.

SPECZFIGATION forming part of Letters Patent No. 309,105, dated December 9, 188%.

(Model T ctZZ whom it may concern.-

Be it known that 1, JOHN H. SHAW, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Spring-Hinges; and I do hereby de-. clare the following. when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a face view showing the two leaves open; Fig. 2,avertieal central section through the ears; Fig. 3, upper end "iew of the ear B, showing the recess a therein; Fig. 4, side view of the pintle detached; Fig. 5,thclocl;ingplate detached.

This invention relates to an improvement in that class of spring-hingesin which a hclical spring is arranged around the pintle, so that one end will take a bearing upon one leaf and the other end upon the opposite leaf, and so that the spring acts upon the torsion. principle to close or open the leaves, according to the nature of the hinge. In this class of spring-hinges it is desirable that they be constructed so that the tension of the spring may be increased or released altogether, as occasion may require.

Various devices have been made whereby the spring may be made adjustable by the pintle, one end of the spring engaging the pintle and the other one of the leaves, and a locking device provided between the pintle and the other leaf; but in most of this class of adjusting devices a longitudinal movement of the pintleis necessary, such longitudinal movement in one direction releasing the pintle from its leaf of the hinge and the return to make engagement therewith.

The object of my invention is to provide a locking device between the pintle and its leaf ofthehinge,whereby engagen'ient or disengagement may be made without movement of either the leaf or pintle; and it consistsin the construction as hereinafter described, and more particularly recited in the claim.

A represents the one leaf of the hinge, con structed with ears B G, D the other leaf of the hinge constructed with corresponding ears, E

E, to set between the ears B O of the other part, and so as to leave a space between the ears E E for the introduction of the spring F, in the usual manner for this class of hinges.

G is the pintle, which is provided at one end with a head, H, to rest upon the end of the ear B,the pintle extending-down through the ears 1-} B, through the spring, and into theears E 0 below, as shown. One end, a, ot'the spring bears upon one leaf, D. The other end, I), is turned into a longitudinal groove, (Z, in the pintle G, the longitudinal groove in the pintle permitting the pintle to pass the end b as it is introduced to its placea common and well known construc tion. It is necessary to engage the pintle with the other part, A, of the hinge, in order that connection may be made between the leaf A and the end Z) of the spring. To do this the upper or outer end of the ear B is con slructed with a recess, 0, through which the pintle passes. From this recess an opening,

f, is made at dialnetrieally-opposite points.

That portion of the pintle which stands in this recess is made'as seen in Fig. 4. That part It immediately under the head is cylindrical, and directly below that is a flange, '5, polygonal ,in shape, but of a diameter somewhat larger than the cylindrical portion h. The height of the cylindrical 'part h should be a little greater than that of the polygonal por tion 77, and the two together should be substan= tially the depth of the recesse in. the car 13. Into the recess a locking-plate, Z, is introduced. This is a flat plate, in thickness substantially equal to the polygonal. flange i on the pintle. At diamctrically-opposite points it is con structed with a projection, m, corresponding to the openings f f into the recess 0 in the ear and so that this locking-plate may be readily dropped into the recess in the ear. Through this lockingplatc is an opening, a, which corresponds in shape substantially to the polygonal flange t on the pintle. The flange is in trodueed into the recess and thenv the pintle passed through it, and when the loeking-plate 9 lies in the bottom of the recess, as seen in Fig. 2, the polygonal flange 2' stands Within the recess in the locking-plate, as there seen, and because of the polygonal shape of the flange 2' and the interlocking of the plate with the car by the projections m m, or by the non-circular shape of the plate and recess, the pintle is forced to turn with the part A of the hinge, to which the ear B is attached; but if the plate Zv be raised to take it above the p olygonal flange i and to the cylindrical part h, as indicated in broken lines, Fig. 2, then the pintle is free to be turned independent of its leaf A of the hinge.

To adjust or apply the spring, raise the locking-plate to the position indicated in broken lines, Fig. 2, so as to free the pintle. Then turn the-pintle by the application of power to its head until the spring is wound to the desired extent. Then permit the plate Zto drop to the bottom of the recess and around the polygonal flange i, as seen in Fig. 2. In this position the pintle is locked to theleaf A, and will impart to the two leaves the power of the spring which has been thus wound; or, if the power of the spring is to be released, raise the 10010 ingplate Z to disengage the polygonal flange i.

I have described the interlocking device be tween the pintle and the locking-plate as a polygonal-shaped flange, i, on the pi utle and corresponding-shaped opening in the plate; but I wish to be understood as including in such description any non-circular shape of the flange z'by which such engagement may be made.

WVhile I prefer to provide two openings, f, from the recess 0, 'and the locking-plate with corresponding projections, one of said projections and its recess may be omitted, if desirable.

I am aware that a shank or spindle holding a torsion-spring has been constructed with a cylindrical and anon-cylindrical portion,upon which a locking-plate was applied which in one position' would hold the spindle and spring and in the other position release them,

The combination of the two parts A D of the hinge, each constructed with ears to set together, a pintle longitudinally through the ears of the respective parts of the hinge, the outer end of the ear of one part, A, constructed with a recess, 6, with an opening outward therefrom, a pintle through said recess and ears, the part of the pintle within the recess constructed with a polygonal-shaped flange, i, and a cylindrical portion, h, a locking-plate, l, in said recess, with an extension therefrom through the opening from the recess 6, said locking-plate constructed with an opening corresponding to the polygonal flange on the collar, and movable longitudinally in said rccess from its position over the polygonal shaped flange 2' to the cylindrical portion 71., and a helical spring around said pintle, one end engaged with the pintle, the other end with the other leaf, D, substantially as de scribed.

JOHN H. SHAW.

\Vi tnesses:

Jos. O. EARLE, JOHN Enwanns, Jr. 

